\section{Bibliograf\'ia}
\label{pgm} Formato PGM \\
\url{http://filext.com/file-extension/PGM}\\
\label{hh} Householder \\
\url{http://en.wikipedia.org/wiki/QR_decomposition}\\
\url{http://www.cs.utexas.edu/~plapack/icpp98/node4.html}\\
\url{http://en.wikipedia.org/wiki/Singular_value_decomposition}\\
\label{svd} Descomposici\'on de valores singulares \\
\url{http://en.wikipedia.org/wiki/Singular_value_decomposition}\\
\label{svd} BURDEN, RICHARD L.; FAIRES,J. DOUGLAS. \textit{Numerical Analysis}.2000\\